Calculating-machine.



A F. POOLE.

CALCULATING MACHINE. APPLICATION FILED JULY x2. 1912.

. PatentedSept. 12,1916.

10 SHEETS-SHEET 1- J r 2064? I iii-0Z6,

"5mm WW A. F. POOLE'. CALCULATING MACHINE.

APPLICATION FILED JULY 12, 1912.

1,198,050. PatentedSept.12,1916.

I0 SHEETS-SHEET 2.

A. .F. POOLE CALCULATING MACHINE APPL!CAT|ON FILED )ULY 12'19!2.

Patented Sept. 12,1916.

1'0 SHEETS-SHEET 3.

A. F. POOLE;

I CALCULATING MACHINE. APPLICATION FILED JULY 12, 1912.

Patented Sept. 12, 1916.

A. F. POOLE. CALCULATING MACHINE. APPLICATION FILED JULY 12-. 1912.

PatentedSept. 12, 1916.

10 SHEETS-SHEET 9.

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CALCULATING MACHINE. APPLICATYON FILED JULY12.1912'.

Pate

lit-ed Sept. 12, 1916.

10 SHEETS-SHEET I0.

AvAitAiifi-i 55 p v STATES PATENT onrion ART UR F. POOLE, or CHICAGO, ILLINOIS, A-ssronon :ro WAHL Alanine MACHINE COMPANY, or WILMINGTON, DELAWARE. Y

CALCULATI l VG-MACHINE.

13 9 Specification Letters Patent. Pateni'ed Sept. 12. 1916'. i Application filed July 12.1912. Serial No. 70am Y I}; all who! ii )mri/ mam-n.- Another ohject of my invention is the conlie it known that I. Lhrrirvu l. 'loouc, a struct ion of a nut chine eontainn'ig mluninar "citizen of the lnited States. residing! at tiiitzihzers in combination W h a hand tulnb Chicago in the county of (,ooh and State ol latable universal totalizer. Another object-of 5 Illinois. have invented certain new and usethis invention 'i an interlock bet een the ful l inprovm i i (aleuhitb g-Machines. eoluinnar mechanism and the universal oi" which the followingisa specification. mechanism. As the carriage of the type My invention is a ealenlatiznr machine. writer is capable o'l' being advanced not \Vhile capable of being changed in eonslrnoonly by means of thel'aluilati'ng mechanism- 10 tionwvithont change in prineiple to be used but also b lllttllll of the spacing bar of the i as an independent eali-ulatinginachine, it is typewriter and also inannally it. sonlefilngs shownin the drawings anddescribed in the happens that the operulor forgets to tabuspeeification as an attaclnmint lothe Reinlutethe universal mechanism tobring' it into fi m tylnwvyitql now mi th m ket, cooperation with theeo luni'nar mei'fhanism; 15 The rah-ulatin finachine of this applica- The interlock just lll lllilfillfllIH'PVOI'RS, any

tion might be conoideredasan ma i-Yawn] sin-h oversight by prm'enting lhe operator and developmentott'lie calculatiiigrniaeliiiie from depressing the numeral keys of the now .on the market in connection with (he I machine and thus calling his attention to the Remington typewriter and which is dewrong condition of ail'aim V 20' scribed in detail in Patent No. 893,719 is- Another object of the inventionis a total sued to John Wald. July--21; 11108. sign ehnng'ing. mechanism. 1y this is meant ()ne of thiuobjeets olthe present invenlhal 'a total present in a totalizeras an addi tion is. the ronstriu-tion of a machine pro' tivo number is illltfill'lfltit'ftlll) eoiiverted into 76 vii (led with a universal mNQulalinQ meehaatotal of the same numerical value but hf glijniofn and also-with a-columnarfealoul-atingnegntivesign. and vice versa. Thisisa very n e( -.hanisnr.' By a i univeral calenliiting useful function andnn example of its applig meelmnismwis meantineehanism which is cation will be given in the specification aliltiio'iuld numbers arranged anywhere on below. I the sheet." v a columnar calculating mech" Another object of my invention is the par- I '30'aniHm is meant a meehanism which is able fienlar construction of the tota'lisi'gn changto add numbers plaeed inn-the sheet under ing' mechanism In the construction to he eaoh other incohnnnararean'L'einent; described'the Sign changing of the total is' orepartienjarl tilted another objcetof liceomplished by removing the total from n i instructionof'a'calein thelot'a'lizer and simiiltaneously and auto- \35' la chine OIUiNNLVIHjI both columnar inaturally replacing: said total in the totalizer l 16:11 ilat i'i'ieTohanism and un versaltealcubut with its sign reversed.

lgini-iihaninm and having itsinew por- Another object of my invention is the still i v honls' as- -far as possible a duplicate 'of the, more particularForm of construction of this calculating machineahovtaciteil' as being now total sign elianging mm-haninin. In the con 40 on the market By this means the new porstruction to be deScribed the changing of the tion is practically as reliable as the well. sign of the total is acm lish d b ivi tested out "old portion and. is-lutidedhj to the-master gzeaithat operates upon the when-path construction than it would be if carrying wheel oi the totalizer .s-(:rimtim, a

112817111138 were different in shape. 1 movement whieh is twiceas great as the 45 nother rbJectof my'mventionis such a movement. necesoary to remove the total construction of the universal mechanism as fromsaidtolalizer.

lto readilyadapt it for hand tabulation. By Another object of my invention isthe coin-' this is meant that the i'lniversal.calculating: bination of a total signrhanging mechanism i mochanismis brought from" its preceding toy in one calculating notion of the machine 50 its succeeding desired position through the with an ordinary calculating mechanism in intermediation o f the hand operated tabulaanother portion of the machine, By this tor of the tvpewriting calculating machine; means a total present in the ordinary portion of the machine may be transferred with its sign reversed to the total sign changing portion of the machine, and vice versa;

Another object of my invention is the provision of cam mechanism whereby the various functions mentioned above are brought into operation automatically.

There are several other objects of the invention which will be explained in the body of the specification.

The invention is illustrated by the accompanying drawings forming part of the specification.

In the actual calculating machine there are a very great number' of parts whose functions and operations in this machine are in no way different from their functions and operations in the machine now on the market and described in the above cited patent. The representing of all of these parts in the drawings would not help to explain the operations of the new portions. On the contrary owing to their very presence they would tend to confuse the following up of the new portions. therefore been left out.

Bea ring these remarks in mind, Figure 1 is a front elevation of the calculating machine as mounted on the typewriter. Fig. 2 a plan thereof. Fig. 3 an elevation looking from the right side toward the machine. Fig.4 an elevation showing the interlock. Fig. 5 an elevation taken on the plane 5-5 of Fig. 1. Figs. (5, 7 and 8 show details. Fio; 9 is a partial front elevation. Fig. 10 is a partial back view of the machine showing an elevation of the mechanism for tabulating the universal totalizer. Fig. 11 is a partial view of the tabulating mechanism viewed in the direction of the arrow in Fig. 10. Fig. 12' is a partial top view of the tabulating mechanism. Figs. 13 and ll are details of the clutch employed in connection with the tabulating mechanism. Fig. 15 is an illustration of the constant aggregate motion linkage in its normal position. Fig. l6 is a view of this same linkage. in its retractcd position. Fig. 17 is a section of the tabulator stops showing the bars contacting with a protruded stop.

The typewriter on which this calculating machine is mounted is the ordinary Reinington typewriter now on the market. It is provided with a framework 1. key levers opcrating type bars, and a carriage traveling to determine the printing point. Mounted on the typewriter and actually present in almost all commercial machines and supposed to be present on the typewriter of this specification is a tabulator. This tabulator by its operation causes the carriage to be brought rapidly from 'its preceding position to the next desired position.

Mounted upon the framework 1, of the These old parts have typewriter, is a framework 20f the calcuson why the two frameworks 1 and 2 cannot 'lating' machine. In reality there is no reabe combined in one. Their separation is.

simply a matter of convenience.

Among the key levers of the t' pewriter are the numeral key levers 115. hese are connected by the usual linkages to the type .bars and associated printing mechanism '(not shown) which serve to print the value of the ope 'ated key lever on a work sheet. The key levers 115 are also connected by links 116 to certain portions of the calculating machine. The operating of any of the numeral key levers causes the operating "of its cooperating parts. Said cooperating parts are the sector, sector shaft and the rock shaft. In the above cited patent (see particularly Figs. 3 and 4) thesector shaft is numbered (39, the sector itself-68 and the rock shaft 89. The various operations of the sector shaft, rock shaft and sector are ,thoroughly' described in the cited patent.

The effects produced by the operating of any key were: on the sector shaft, a vibrating of said shaft to an amount dependent upon the value of the numeral key operatin g; on the rock shaft, themovement thereof an amount which was equal for any of the keys operating; on the sector itself, a meshing previous to its stroke, a remaining in mesh during its stroke, an unmeshing after its stroke, and a remaining unmeshed during its return or restroke.

In the present drawings the sector shaft is numbered 3 the rock shaft 4 (Fig. 4) and the sector itself 5 (Figs. 1 and 4).

The sector is normally inclined or in a positioashown in Fig. 1. In said position it is out of'mesh .with the direct gear 6 and all the more out of mesh with the reverse gear T,(Figs. Land 2). 13y the mechanism previously mentioned, during the first part ofthe operating of the numeral key levers the sector 5 is brought into a position to have its plane. perpemlicular to the axis of the sector shaft 2). In this latter position'the 'sector 5 meshes with the right end of the direct gear (3. The movement of the sector is thus transmitted to the direct gear, which is rotatably mounted upon the supporting shaft in the framework. Mounted upon the same shaft and splined to said direct gear is a master gear 8. Any rotation of the direct gear is thus imparted to an equal amount to the master gear. The direct gear is not only rotatable in the fr ipnework but alsoakially' slidable thereon. he reverse gear 7 whic 1 is always in mesh with the direct gear '6 is- ,quently the operating of arms 21 are all equal in length and as they are fastened to their respective shafts in similar angular positions it is evident that both for the sector shafts and the rock shafts the mechanism composed of the four links, namely the framing as the stationary link, the. two arms 21 and the link 20 form in each case a parallelogram. Consequently any movement that the old sector shaft 3 has imparted thereto is imparted to an equal amount to the new sector shaft 3. Similarly both the old and the new rock shafts 4 and 4 receive equal movements. Conseany of the numeral key levers of the typewriter operates the two sectors 5 and 5 and the twonnasterdogs 12 and 12-and their connecting parts not only in a similar but in an equal manner.

The chain of equal movements breaks with the sectors. In the columnar mechanism the master gear 8 is placed in. a condition which is additive, nonactive or subtractive according to the manual locating of the axle 9. Simila'rlythe universal mechanism is provided with an axle 9 (Fig.2) which can also be placed in any of three positions and as a result whereof the master gear 8 is brought into additive, subtractive or nonactive condition. It is evident that by the proper placing of the axles 9 and 9 the direct gears 6 and (5 may be given equal movement in the same or opposite directions or thatcach of the direct gears 6 or 6 may be brought at 31 and connected at its upper end to-a link 32 whose left end is connected to the lower end of a vertical arm of a lever 33 9 fulcrumed on the framing at 13+ and provided with a roller '35 mounted on the end of an arm extending to the right from the fulcrum. Because of the chain of parts, movement of the shaft 9 to the right is accompanied by a downmovenient of the roller and vice versa. The roller 35 is normally in its elevated position being kept so by a spring 36 operative upon the shaft 9?. To bring it into either of its lower positions there are provided cams 37 attachably mounted to the front lower corner of the columnar totalizers 1'3. These cams are of three-levels, a highest level, a middle level, and a lowest level. In its highest level the cam 37 does not depress the roller at all and may therefore be imagined to be not Y into proper condition present. In master gear dle cam 37 \VllLlHlIlg the roller to its middle position and the master gear 8 into its nonactive condition. The lowest cam 3: or cam of lowest level will bring the master gear,

8 into its subtractive condition: It is thus evident that by properly placing suitable cams upon the columnar totalizers the universal master gear 8 is automatically in- 8 will be additive. The midstructed and will automatically be placed' certain predetermined locations, and will not operate' at all at still other predetermined locations. Attention 'is here called to the fact that the totalizers 13 in so far as the action of the cams 37 are concerned need not have any mechanism inside. They might be dummy totalizers as they simply serve to support said cams. This might be advisable in *ase there are no columns to be added or in case there is only one-column to be added, which can just as well be calculated by means of the universal totalizer only;

In the operation of the typewriting calculating machine the various figures of the number are printed not simultaneously but successively. Moreover the number is inserted in the totalizer in the same manner, namely the various decimal places thereof are inserted scriutim. .This is accomplished by the travel of the carriage which carries the totalizer 13 over themaster gear 8 and and will add at certain predetermined locations, subtract at other the master. dog 12 and thus brings the various sections of mechanism in the totalizer successively over said master mechanism. In the machine of this application the universal totalizer 13 is given a similar movement. It too is carried from right to left 'and brings its various decimal sections suc cessively over its universal master mechanism. This movementflis brought about through the chain of parts composed of the arm 40 (Figs. 1 and 2) rigidly fastened to the universal totalizer bar 14. and the link 41 pivotally mounted upon said arm 40 and having at its left a slot 42 which is adapted to cmbrace an extension 43 from the lower back corner of the right wall of the columnar totalizer. Whenever said extension 43 is in the slot 42 and the columnar totalizer has any movement imparted thereto, then the universal totalizer 13" will have an equal movement imparted thereto. Moreover the columnar totalize "and the universal totalizer will be located over their res ective master mechanisms with the same (ecimal places. I i

In the operation ofthe machine the carriage of the typewriter and the columnar totalizer travel to the left. The particular columnar totalizer which has its extension 43 in engagement with the link 41therefore pin 134 rigidly mounted in the arm 135, pivoted on the shaft 136. This arm and shaft will be recognized as a standard part of the Remington tabulator, and Without going into an extended description of said arm and shaft, it may be stated that when any tabulator key is pushed, this shaft is rotated in a counter-cloclnvise direction, and conse- 137 having therein a slot 138, adapted to oooperate wlth the eccentric 125 (Figs. 10 and .16). Rotation of the said eccentric results,

therefore. in the up and down motion of the saidlever 137. Mounted at the end ofv said lever is a roller 14() coiiperating with a slot 142, in a cam 141. The slot 142 embraces a shaft and 148 respectively.

143 rotatably mounted in the frame work, and terminates in, an enlarged portion 144.

Rotatably mounted on the shaft 143 is a pair of scissors arms 145 and 146. Each of these arms has pivoted to it a short link 147 These linksv are joined "in a pivot 149 to the cam 141. The linkage comprising the scissors arms 145 and 146 and the links 147 and 1.48 will be hereinafter called the tabulating linkage;

. As far as the parts have en described, if the earn 141 were raised from the position shown ,in Fig. 15 to that shown in Fig. 16,

the pivots 150 and 151 in the arms 145 and I 146 respectively, would'be brought approxiniately into a line parallel to the shaft 143,

but when this is done, the entire .linkage would still be free to rotate about the shaft 143, since 'the slot 152 in the earn 141 is made with its surfaces concentric with the shaft- @143, when said cam 141 is inthe position shown in Fig. 16.

I shall now describe the means for loca'-- ing this tabulating linkage into a position determined by a particular tabulator stop. Referring to Figs. 15, 16 and 17, it will be seen that the scissors arm 145 has pivoted at 150 a bar 153. Also that the scissors arm sto 146 has, pivoted thereto at 151 a bar 154, having a right angle projection 155. The bars tione'gl that when the scissors arms are thrown to jthe position shown in Fig. 16, there shall be between the right angle projection 155 and the bar 153 a space equal to the width of. the tabulator 156. 0 repeat what has'been grail before, op-- rought to the position shown in Fig. 16,.

where the bars 153 and 154 embrace the protruded tabulator sto and thereby determine the location of t 1e ,tabulating linka Therefore it follows that each time a tabu ator key is pressed, the entire linkage will locate itself in a position dependent on the particular tabulator stop which has been actuated. Y I shall now describe the means by which this location of the linkage is transferred to the universal totalizer.

The shaft 143, it will be remembered, is rotatably mounted in the frame work, and has rigidly attached to it arms 157 and158, which serve to support the roller 159. Reference to Figs. 11 and 15 will show that the roller 159 is in the path of thecam 141. .Reference to Fig. 16 will show that when'the can114l is raised to the extreme upper limit of its travel, the center. of the shaft 143 is coincident with the semi-circle at'the bottom of the slot 142, and that the route 159.15 cmbraced by said'sl'ot 142, thereby positively locating this roller in a position, as deter: mined by the position of the cam 141 when this cam is in its raised position.

Since the position of the cam 141 is determined by' a particular tabu ator stop, it

follows that the roller 159 and consequently.

the shaft 143, will be brought to a position which has been operated. I

Rigidly mounted on the shaft 143 is a sec ond arm 160, which is connectedby a link 161 which, it will be, remembered, is' rigid with the truck carrying the universal totalizer. The arms 160 and 162 are not of equal length, .bu

pensat'e for the difference in length between theshaft 50 and the pivot connecting the link 52 to. the arm 51, and the distance between the shaft 143and the pivot 150, the object being to makethe travel of the universal totalizer equal the travel of the pivot 150.

While I have above described one articudetermined by'the particular tabulator stop t are so proportioned as to com to an arm 162, rigidly mounted on the shaft lar form of tabulating mechanism, w ich can be used in connection with my inventidn, itis obvious that there are other forms which may be used,'and that the tabulating mechanism per so is not a part of this present invention, being claimed in my co-pending application #716,939, filed August 22nd, 1912.

50 might be very well operated by hand, the operationbeing that after the columnar totalizer has been i brought to its placeby the tabulation of the mam carriage of the typewriter; the uniyersal totalizer is brought byhand t0 the place where the slot 42 in the arm llwill' engage the heelof the columnar totalizer. T he two i Indeed, theshaft totalizers will thereafter travel together until the number has been inserted -i1 1 both its-action on ll dlsconnect t ie-two totaliztotalizers whenthe pin 45 h the bar 41 wi er. I

Attention is called hereto the fact that 5 there is no mechanism connected to the universal tot'alizer tending to bring it to any definite position. Its normal position. would be at the extreme'left of its zone of travel because that would be the position where it would be disconnected from the columnar totalizer. When in said position (the. columnar totalizer maytraveland yet not engage the slot 12 of the connecting link 41. The carriage may therefore advance to an desired position or n part way or all the wa ing the universal totalizer out of its place.

.' Afterward the universal totalizer canagain engage the carriage of the columnar totalizer or not, but it has to be previously moved out of its normal position and this is accomplished by tabulatingitthrough the internlediation of shaft '50. This will carr Y the link 11 oil from the extreme-position 36 into some nonextre'xne position and the link 41 by. means of the spring 46 will thus rise uppto engagesuch an exte come'iu contact thcrewlth. Sometimes the operator moves the cat;-

0. riage of the typeu'ril'eiaaiul therefore al i the columnar totalizers notjby means. of ti tabulator but either manually or by mead? of the spacing bar. This of course has no effect upon the universal totalizelz Shouloi any nulneralkey 'now be struck-it. might? enter into thccohunnar totalizeubut will not enter into the universal totali'ier. This might result in error. Aninterlocking mechanism has therefore been 1 introduced to prevent the pressing of any of the-nu; .iucral keys whenever the u-niversal totalizery is in a:non tabulatcd position whenit should lie in a tabulated position. As theunivcrsal tptalizer, is brought into i iaetiye or nonactive condition by means of i tlib 'eams 3711pon the columnar totalizer, it. is evident that the tabulated position of said universal tOlZilll/ml is equivalent to either of its activeconditions, namely trzkitive. Let itbe re condition of the), universal ,totalize'r is brought aboutwby the placing of the shaft 9 in either. ofrits extreme po I v the nonactive.position is brought about by the placing of said shaft inits "middle po-' my be returned y without movnsion 43 as may ts additive. subadditiveo'r sub called that :the; ;activ.e

sitions while- BEST AVAlLAB LE COP" sition. The universal totalizer therefore requires tabulation preliminary to the enteringfofanumber, therein whenever said shaft 9 mm citherof its extreme positions, and does not require tabulation when the shaft is in its middle position. This condition-of affair-sis taken advantage of in the con- 'strnction of the, interlock whose. mechanism will now be explained.

l ulcrumed upon; a stud (see Fig. 4) mounted in the framew 61. 1 The fulcrum 60 h with the universalsector shaft 3 but this is merely a matter of convenience. The ratchet piece (ilQiS provided with a spring '62 which tends piece backward (to the right in Fig. 4). The ratchet piece is provided with several hook teeth. "Among them are 63, 64 and 65; The hook tooth 63 cooperates with another. book i tooth 6(5 rigidlyfastened to the auxiliary -rock shaftxl. Whenever (wand 66, are in engagement the'auxiliar'y roek shaft cannot, inove. Because of the locking of the rock shaft the numeral keys" of the typewriter cannot be depressed. f This is the way inwhiehthe attention of theoperator is attracted. The hook tooth 64 co operates with a pawl 67 ful'crnmedonthe fran'i'ing at (38 and providedwith an arm 69. By means of t given a tendency to Should said paw Y hook tootlrg' then the ratchet'piecefil will be kept out (if-engagement with the rock shaft; The latter therefore would be freeto move. Sliouldthe pawl 67 he raised then the ratchet piece would immediz ltely engage therock shaft and lock thenulneral keys. Thelnovement of the pawlfi'? is brought aboutvby the movement of the arm '69 forming a rigidpart therewith. The latter is operatecl'by a cam 71 rigidly fastened and forming part of 1 "the auxiliary totalizerbar 14. Let it be. recalled thatthe normal position of the auntiliary totaliz er and M treme left.v In'that position the canr 71 just, reaches the arnrlifl pushing it backward and raising the pawl 67 from the ratchet piece;

has thisis' a position of the totalizer cortespending to a location its lowest decimal place it is. not an op' a'tive position of said totaliYIer..,; Theirelea of the ratchet piece 61 permits it to ,enga

th aock shaft and-should. any attempfibef made by the operator to depress'a'nybfth numeral keys his attention would immedi ately be attracted.

move downward.

talizer. to some position different from the, one justnientioned: The arin69would thus no longerflybe pushed back by the cam. .71. The pawl (l'l' would thus become ready ;to engage the hook (54 as soon as, the latter is .to move the top of said ratchet these two teeth,

he spring 70' the pawl 67 is l engage its cooperating of its-bar is at the one step lower than j However in. proper -opera'tiomthe machine would next be tabu- -lated\ .This would bring the universal to- 5. This is accomplished by providing the mechraised. This is accomplished by providing the ratchet piece H1 with a stud 72 which is engaged by the lower end of a link 73 whose upper end is connected to the right end of the lever 74 rigidly fastened to the shaft 75 fulcrumed in the framework, (see F 1 and '2).

.The lever 74 11115 the pin 4-?) rigid therenccted to an arm '7 7 rigidly fastened to the;

shaft 78 mounted in the framing of thetypewriter, (see Fig. 3). The shaft 78 and the arm 77 are portions of the standard tabulator as now on the market. The operation of any of the keys of the tabulator results in the rotation of the shaft 78 counterclockwise. The operating of any of the keys would therefore also result in the drawing of link 76 downward and of link 7 3 upward..-

The effect of this would be to raise the ratchet piece (31 out of engagement with the auxiliary rock shaft and into engagement with the pawl 67. The latter immediately snaps in behind the tooth c4. and prevents the ratchet piece from reengaging the 1101- vcrsal rock shaft. Summarizing: The nontabulat-ed position 9f the universal totalizer irevents the depressing of a numeral key.

tabulated position of the, universal totalizer "permits the depressing of a numeral rigidly key. I

Sometimes it is columnar totalizeiuniversal totalizer:

desired 'to operate the without operating the The latter is therefore inactive. Shaft 9 is therefore in its middle piece (31 should not in position. The hook tei'fere', therefore it ought to be held open.

anism with a pawl 80 fulcrumed on the framing at 81 and having an arm 82 which cooperates with a spool shaped collar 83 fastened to the shaft 9. In its middle position the collar 83 permits the arm ,82

80 to engage hepiece .60

cofiperittin with to reach a lower osition than it does when it is i n izleither of its extreme positions. The pawl 80 is provided with a. pawl tooth Bfl the hook Girof the hook piece 61 he bringing-of the spool to its middle position therefore allows the pawl 61 to keep it in its This is true then noninterfering position.

with the universal totalizer in its normal osition. The columnar totalizer .may therefore be operated without interference. The

2 bringing of the universal 'totalizer into either of its active conditions causes the spool 83 to raise the pawl tooth 84; out of its the totalizer the highest gear 6 is asprevious.

engaging position and thus again renders the interlocking mechanism active.

In certain forms of account it is desirableto convert a total which is present on the totalizcr. into another total which has the The same effect is produced opposite sign.

of said total there is introduced when instead the arithmetical complement thereof. the machine described in the above cited patent to Wahl a total is removed from the totalizer by tive. To simultaneously change the sign of said total this machine has been provided with mechanism whereby they nuinbeiyresubtracting .it out when it is" positive and adding it in when it is nega moved is not the total but twice said total.

Let it be recalled that in the operation of the machine the total becomes visible. More over in the introducing of the machine or in thecopying of the total on decimal place is operated on first. A provided with certain guide marks alining with a pointer upon the fixed portion 'of the machine which always apprises the operatorof the decimal place ready to operate on. Again any carrying that takes placealways carries from right to left and never reversely. Therefore if the operator would by some means subtract from a totalizer imam, operating in highest decimal place first, lowei 'next, twice, the figure that the pointer shows, there would be no mistake made and would be that-there would reappear in the totalizer the total that had previously been 7 there but with its sign reversed. This would be the case if it would be an algebraic totalizer. In the ordinary'totalizer such as described in the above cited patent to Wahl and used in the machine described'in my present application there would. appear the comple'tnent of the previous total which for many practical purposes is the same in efiect.

This machine has therefore been provided with a mechanism which causes the master gear whenever so desired to rotate a dis-' tancetwice the numerical value oftlie depressed numeral key. Said mechanism will -now be explained. i

The sign changingmechanism in this case 18 a. double distance mechanism.

the final result the numbers into gain the totalizers are 1 that the" machine is More spe-" cifically stated a master gear double distance mechanism. This is shown in the drawings in connection with the universal totalizer and on fa larger scale in .Fig. 6. A All the mechanism up to and inclusive ofthe'direct The latterhowever is no longer splined. to the auxiliary master u gear S. Instead, the direct gear is spliued and rotatesfwith the shaft 90 (Fi Rigidly fastened also said 5 .ll ga-nd aft is an I auxiliary gear 91. Adjacentto the latter' is a gear 92"of the samesizcawhich forms one piece with the auxiliary master gear 8,

these are free to rotate on their supporting shaft. Somewhat in front is located a shaft 93 which .is sli dable-i in the framework and hassrotatably mounted thereon between collars 94'a'spool shaped gear 95. Rotatably' mounted onfa stud' 96 which is fastened inst" the framing is a double gear provided with a geai' of larger diameter 97 and a gear of 1' smaller diameter 98; The two gears97' and 1098 are rigidly fastened together. The small, gear 98 is always in mesh with the gear 91.

' the position ofvthe parts illustrated in";

. Figs-2 and 6, the rotation of the gear 91 will transmitted .to the spool gear 95 but as" g the latter is not in engagement with the gear,

92. theauxiliary mastergearwill not be rotated. This is therefore an inactive or.non-,

n operating condition of ,said'mas'ter gear]- Should the shaft93 ,bemo'ved somewhat; to?

--the.right, then the left portionof the spool gear will engageithe gear 92 while tlieiigliti portion will still be in engagement with the 93 .is moved still fart her to:

BOHrighthaIf of saidspooltgearleaves the gear 91 and engages the. gear 97.f Any rotation? i of the shaft 99 is now'transinitted to the "master; gear through-theintermediation of Q mgear-f91, gear 98,.gear 97, spool'gear andgear 92. It as evident that gear 92; and

therefore the master gear also, now receives -aniovement iniich greater than it received ..1l'l the preceding equal-speed pos tion 'of,the

*pairts. 'Gears'97 and 98 are. -properly di-f mens-ioned tomake such increased movement I therefore is'that with the shaft [93 in its left Tineclianisni and the handle inecha'nisin cone inent from the direetgeartwith the shaft 'positionthe master gear 8 receives nomove- I 45,: in its middleipositi'on it receives anfequal movement as the direct gear; with the shaft win ts rightposition the ma'sterigear'receives amovenient double thaltof the direct'gear.

Tially or automatically by ineans of the cams.

; v 1 "The shaft 93 at its rightend; (see Fig. 1) is provided with a collar 100 rigidly fastened i thereto which embraces thelowe'r end of the.

$Stlldi01md1l" part ofthe lever 101 fiil crumed ;in the framing'at 102 and-provided with a jtension sprin 103. The latter 'tend's to bring the sha t' 93 always into itsleft posi Each day there are entere'd in column-.1; ,9 individual checks, Incolumn2 is gr *tion' that is, its inactive position. The shaft '60 cane displaced from-said position by means of ra handleil04whic'h is supported in the framing. When manually moved to the.

{Ni i htsaidjhandle pushes uponfthe left end "deposit for the day,' under+t the pri 1 b w 0 the shaft "Thehandle 104 is prevent-t 6 edf from being pushedgb ack intoits left no,

1113 when it is in its liighesttpositi'on aniit'h sum' of thechecks venteredioi-i that dfa.

evident that the n imb'er under sition'by inea iis of a pawl tooth 106 engaging a ratchet rod 107 fixed in the-framing. A spring 108 fastenedwith one end to theliandle 104-andwvith its other endtoithe framing retains said handle in, engagement with said ratchet rod.

a link 110. This extends to the 1e and has arm forming part of the lever 111 fiilcruined Theshaft 93 is ca'in l'ocatedas Th'e'jlever 101 has its iip'pe end-.; innedf to in the framing at 112. 'The lever is pr0- vided with ahorizonta'l arm extending from its fulcrum to the left which arm! at itsend supports a roller 113; Any displacement of otheshai't 93 tothe right is therefore accom-- panied by a lowering of the roller 113;v and-'- vice versa. To (-oiipei'a te with said olleii the columnar 'total-iZ'ei-s" 13"are; prov 'i dedi with, cai'iis; 11l;? Said cams are :icl'justalilyrifas- .tened v upon said, col 'imnarftotalizers and fare of three kinds;- acaii contacting; the roller ca 111 rca ching somewhatlloweigj d contacting and bringing the o e1 1 (lie position, anda lowest pain bringr roller to its lowest position. It' is evident thatthe first kind of on iii {brings the: teta lgg sign changing mechanism intox'its nonactive position or in 1619 'pfillilitSfl 1l to occupy that position by removing interference from -the tendencyf givent'o said mecliaiiism toasgiime tliisposition. Mojreoverit is) evident that; for this position the cainneed notbe} present.

The middle cam brings thetot'al signehang;

ing mechanism into itsfequa-l-speedfiposiw tibn. Thelast 0! lowest camhrings thetqtal sign; changing mechanism: 11'1t0 'itsfdo' bl e speed or sign changing position." in

' Attention is i] "re called to {the fact that no interference exists-between :the camfimeehani'sm controlling thetotal sign tch ngin'g trolling the same. "lEither may lie-"operated withoutiaiiecting theother." 1,;- an examplewillnow be given ofthe-form of account in which calculation 'thef total is an-iaccount used in vbanks fl he arrange bhecli s I "linaltliek's; Ibep'osits.-1"Priorlialiincefl column 1. OQliiinn Q'i thereforeth draw'al for thatday. t Under-3 is ente ance and under. 5 the present :bala

sign changing mechanism .is employed Iti i j In the machine the positioning of -.the' l' 0 shaft 93 maybe brought abouteither manu-*" 1 m'en't isasfollovvs. i. t 115 i the sum of the numbers under 3 and 4 minus the number under 2. The withdrawal for the day or the number under 2 is derived as the sum ofthe numbers under 1 but it enters the equation just explained not as a positive number but as a negative number. It therefore has its sign changed. The mechanism therefore has its cams set up to calculate this form of account as follows. For the numbers under 1 there is provided a dummy totalizer with cams rendering the universal totalizer positive and equal-speed. The totalizer 13 used for the universal totalizer to calculate the above account is similar in structure and operation to the totalizer described in the above cited Wahl patent. For column 2 there is provided another dummy totalizer, with cams which render the universal totalizer negative and doublespeed For column 3 there is provided another dumm the universa totalizer positive and equal- The dummy totalizer for column4 renders the universal totalizer positive and equal-speed. Column 5 renders the universal totalizer negative and equal-speed.

The operator brings the carriage of the typewriter to the bcginning of the line and tabulates both the columnar totalizer and the universal totalizer simultaneously. The numbers that are printed under column 1 are footed up and their positive total is visible on the universal totalizer. The operatorlthen tabulates the machine for column 2. .He then strikes the numeral keys, :1 key at a time, and always the key which is momentarily being pointed out on the universal totalizer. I present in the universal totalizer is printed finlc'olimm 2 and subtracted twice from the ize'r it would therefore appear with itssign reversed. In .the totalizer actually used it dently the present balance.

is the'complement of the total that appears; but this does not harm. 1 The operator then tabulates the machine and introduces the number in column 3. He next does the same for column 4. There thus appears in the universal totalizer the difference between g1 sums of numbers 3 and 4 and number 2, lat is, the remainder after the withdrawal has been subtracted from the sum of the deposit and the previous balance. This is evi- The operator now tabulates for column 5 and writes said present balance upon the paper where it is printed in its proper location while the machine automatically clears the universal totalizer ready for the next set of items.

It igbt be here remarked that should the present balance be negative, that is should there should be an overdraft, the operator will ordinarily recognize it as such by the fact that the universal totalizer shows there will simultaneou sum of all the deposits,

totalizer whose cams render call attention to some As a result the total previously- In an algebraic -total- 3Q repetiti on.

in its highest decimal place of 99999s.

Attention is here called to the fact that in the whole ,explanation of the preceding calculation the cam bearing totalizers were as-v sumed to have been dummy 'totalizcrs. Let us now assume that they are not dummy totalizers" but columnar totalizers. As far as the effect upon the universal totalizer is concerned there is no difference. But now slybe calculated the sum of the columns 1, 2, 3, 4 and 5. That is, there will now be known the sum of all the checks the sum of all the withdrawals, the

which are ve desirable in themselves not only as a chec on the accurac of the chine but also for their own aid in bookkeeping. The are especially checked against totals obtained elsewhere.

The description of the machine has now been finished but it is thought advisable to features. The universal totalizer andits 0 rating mecha nism, etc., sector, sector shat and rockshaftetc. These are items saeasagrea have been 've carefully preservedin their orientation. e connecting link between the rock sh ft and the auxiliary rock shaft and the similar link between the two 'aec tor shafts have been added to allow of the displacement of the auxiliary mechanism out of alinement .with the other mechanism. This displacement of the auxiliary mechanism was caused'by only'one factor, namel thedesire to leave roomfor the'long tota izer bar on the carriage of the;typewriter. It is evident that this could have been accomplished in also other manners. simple one would have been to lengthenthe rock shaft and'sector shaft to the right a suflicient amount, and to. place the universal mechanism fa r enough away. -With this too A: very construction of parts the universal sector 4 couldbemounted upon the extension of the old sector shaft. The would therefore beno'longer merely similar but identical. The sam'eremark applies to the rock shafts. In fact the construction two sector shafts uldnow become to even ,a greater extent- 'yr'ould occur, 1 aaet of nu eral keysl In" this bination ltl ere digital value of the numeral key then 0 r- .ating and 3, a rock shaft which woulc be moved equally no matter which isthe key that is then operating.

In the specification used. This has no cx meaning. It is a pure y accidental'term due to the appmximate shape of the piece. .The term sector shaft is similarly accidental and the same, remark applies to the term the term-sector is ilanatory self-evident 

